This may be obvious... I am not clear on all the ramifications ....
What is the most efficient way to convert battery energy into heat ?
( I would like to get all the energy out of the battery =3D=3D> heat  )
The battery will be a LION rechargeable.  I can stop discharging at whateve=
r voltage is the best tradeoff between lifetime for the battery and amount =
of energy extracted.
I am going to heat a small object to about 28C to 32C.  The object is insul=
ated and thermally conductive.
Ambient will vary from 0C to 20C.
I will have a temperature sensor for the object and I could have one for th=
e ambient.
When a battery discharges into a resistor, does most of the energy convert =
to heat from the resistor ?  I understand that a small amount will be lost =
to wire resistance and the internal resistance of the battery.

Thanks for any help.

Gus
--=20
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